(George Clooney is pictured above with his girlfriend Stacy Keibler at the 2012 Academy Awards)

The public sale - which is expected to raise at least $100,000 - is to be held at the Pebble Beach Concours d'Elegance in California on August 18.

David Gooding of the Gooding & Co auction house said in a statement that his firm is delighted to be aiding such a worthy cause.

"We are overjoyed to present George Clooney's Signature 100 Tesla at Pebble Beach because this is an incredible opportunity to purchase a modern collector car with all the right elements - one-owner, celebrity provenance; historical significance; limited-edition rarity and philanthropic tie," Gooding said.